A class that is not abstract is sometimes called a(n) ____________.

An item of data-such as the string "Taylor"-is viewed similarly by a human being and a computer.

Answer the following statement true (T) or false (F)

When you create a contact group, you are not creating subfolders for contacts, but rather another way to reference ____________________ at one time.

Fill in the blank(s) with the appropriate word(s).